body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
pre,
form,
fieldset,
legend,
button,
input,
textarea,
th,
td {
  margin: 0;
  padding: 0;
}
body,
button,
input,
select,
textarea {
  font-size: 12px;
  line-height: 1;
  -ms-overflow-style: scrollbar;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 100%;
}
ul,
ol {
  list-style: none;
}
a {
  text-decoration: none;
  cursor: pointer;
}
a:hover {
  text-decoration: underline;
}
i{
  font-style:normal
}
img {
  border: 0;
}
button,
input,
select,
textarea {
  font-size: 100%;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
.clearfloat:after {
  /*伪元素是行内元素 正常浏览器清除浮动方法*/
  content: "";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.fr {
  float: right;
}
.fl {
  float: left;
}
.block {
  display: block;
  text-indent: -999em;
}
